use std::net::TcpListener;
use std::io::{Read,Write};
fn main() {
    let listener = TcpListener::bind("127.0.0.1:3000").unwrap();
    println!("listening");
    let result = listener.accept().unwrap();
    for stream in listener.incoming(){
        let mut stream = stream.unwrap();
        println!("Connect!");
        let mut buffer =[0;1024];
        stream.read(&mut buffer).unwrap();
        stream.write(&mut buffer).unwrap();
    }
}
